X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;f=ucw%2Fperl%2FUCW%2FConfigure%2FC.pm;h=b14759258ff9c83eb9a45311be989eb6482c25a9;hb=9ef73a67dd942f6e369c2719847d2cc35e920c88;hp=e961ca009f9c07ad34a3447759313afae3357b4f;hpb=f1155256f7a168f5e2c0097cb4e7197b79c4f041;p=libucw.git

diff --git a/ucw/perl/UCW/Configure/C.pm b/ucw/perl/UCW/Configure/C.pm
index e961ca00..b1475925 100644
--- a/ucw/perl/UCW/Configure/C.pm
+++ b/ucw/perl/UCW/Configure/C.pm
@@ -65,6 +65,8 @@ Test("ARCH", "Checking for machine architecture", sub {
 		return "i386";
 	} elsif ($mach =~ /^(x86[_-]|amd)64$/) {
 		return "amd64";
+	} elsif ($mach eq 'powerpc') {
+		return $mach;
 	} else {
 		return "unknown ($mach)";
 	}
@@ -85,6 +87,13 @@ if ($arch eq 'i386') {
 	UnSet("CPU_BIG_ENDIAN");
 	Set("CPU_ALLOW_UNALIGNED");
 	Set("CPU_STRUCT_ALIGN" => 8);
+} elsif ($arch eq "powerpc") {
+	Set("CPU_AMD64");
+	UnSet("CPU_64BIT_POINTERS");
+	UnSet("CPU_LITTLE_ENDIAN");
+	Set("CPU_BIG_ENDIAN");
+	UnSet("CPU_ALLOW_UNALIGNED");
+	Set("CPU_STRUCT_ALIGN" => 4);
 } elsif (!Get("CPU_LITTLE_ENDIAN") && !Get("CPU_BIG_ENDIAN")) {
 	Fail "Architecture not recognized, please set CPU_xxx variables manually.";
 }
@@ -119,17 +128,20 @@ Set("LIBS" => "");
 
 # Extra flags for compiling and linking shared libraries
 Set("CSHARED" => '-fPIC');
-Append("LOPT" => "-Wl,--rpath-link,run/lib");
-if (Get("INSTALL_LIB_DIR") eq "/usr/lib") {
+Append("LOPT" => "-Wl,--rpath-link,run/lib -Lrun/lib");
+if (!IsSet("CONFIG_LOCAL")) {
+	# Beware that in non-local builds the INSTALL_LIB_DIR must exist in
+	# standard search paths for shared libraries.
 	Set("SO_LINK_PATH" => '');
 }
 else {
+	# In local builds, we need to link binaries with custom --rpath.
+	# GCC seems to fail when this directory does not exist.
 	Set("SO_LINK_PATH" => "-Wl,--rpath," . Get("INSTALL_LIB_DIR"));
 	AtWrite {
-		# FIXME: This is a hack. GCC would otherwise fail to link binaries.
 		my $libdir = Get("INSTALL_LIB_DIR");
-		if (IsSet("CONFIG_SHARED") && !(-d $libdir)) {
-			`install -d -m 755 $libdir`; Fail("Cannot create $libdir") if $?;
+		if (IsSet("CONFIG_SHARED")) {
+			`mkdir -p $libdir`; Fail("Cannot create $libdir") if $?;
 		}
 	};
 }
@@ -167,6 +179,16 @@ if (IsSet("CONFIG_DEBUG")) {
 	Append("LOPT" => "-s");
 }
 
+# Link-time optimization (experimental)
+# This is currently very inefficient, because we do not attempt to disable
+# optimizations when compiling individual modules. Therefore, we optimize
+# each shared library module twice: when compiling and when linking.
+# Doing it properly would require hacking makefiles.
+if (IsSet("CONFIG_LTO")) {
+	Append("LOPT", "-flto");
+	Append("COPT", "-flto");
+}
+
 if (IsSet("CONFIG_DARWIN")) {
 	# gcc-4.0 on Darwin doesn't set this in the gnu99 mode
 	Append("CLANG" => "-fnested-functions");